A fortification of stone and timber built by the Roman Empire across the width of what is now northern England.

A motordrome. / A form of moshing in which audience members divide into two halves and run toward each other.

plural of front wall

plural of back wall

plural of wall kick

(video games) A sideways movement that results from a rotation of a piece that is touching the left or right walls in certain versions of the video game Tetris. / (video games) A wall jump.

A hypothetical 2-dimensional analog of a cosmic string.

A small, thin species of lizard found in Europe and North America, Podarcis muralis. / Any lizard of the genus Podarcis. / Any lizard of the family Lacertidae, a lacertid

A plant of the species Parietaria officinalis, that has greenish flowers and often grows on walls (eastern pellitory-of-the-wall). / Parietaria judaica (spreading pellitory)

(video games) A move in which a character jumps into a wall or similar barrier and executes a further jump by pushing away from it in the opposite direction.